Liquid-treating apparatus



June 8 1 926. 1,587,628

K. w. BARTLETT LIQUID TRE-ATING APPARATUS Filed August '7. 1925 ll MIM l l iib 'ii' WW I IIII HI IIWI |l| H| l H i ltfim'i w M g i I IH' WW 1 WWI] H K Patented June 8, 1926.

UNITED STATES KENT W. BARTLETT, OF HAMMOND, INDIANA.

LIQUID-TREATING APPARATUS.

Application filed August 7, 1925. Serial m. 48,781.

My invention relates to liquid treating apparatus and is of particular service when embodied in water softening equipment.

The invention has for its object the provision of improved means, governed by the water or other liquid for supplying chemical to the treatment tank receiving the raw liquid in fixed proportion thereto.

In carrying out my invention in the preferred way, I employ an incoming raw water or raw liquid pipe, discharging into a treatment tank below a limiting level and having an orifice of reduced size in its bore, so that the pressure of the incoming liquid on the receiving side of this orifice is greater than the pressure of the li uid on the discharge side of the orifice. wo receptacles are employed, one connected with the raw liquid pipe upon the receiving side of the reduced orifice in the bore of this pipe and the other connected with this pipe on the discharge side of said orifice. These two receptacles are closed against the admission of external air and air connected by an air passage at their upper portions above the liquid levels therein. The liquid received in one receptacle from the receiving side of the orifice in the raw liquid pipe rises to a higher level than the liquid received in the other receptacle from the discharge side of said orifice. The air passage between the two receptacles enables the liquid in the first receptacle, as it rises, to depress the level of the liquid in the second receptacle, so that the levels in the two receptacles differ in height in proportion to the difference in pressures on the two sides of said orifice. The two bodies of liquid in said receptacles govern valves preferably through the intermediation of mechanism having floats riding upon the liquid in said receptacles. The valves controlled by this mechanism are desirably in the form of swinging pipes in a third liquid receiving receptacle. The levels at which the intake ends of these pipes are placed differ in height similarly to the levels in the first two receptacles. One of these swinging pipes discharges into a float tank having a float therein which governs the supply of chemical. The other of these swinging pipes discharges into a fourth receptacle that contains a float that is in controlling relation to a valve that is in a pipe that supplies liquid to the third receptacle,- whereby the level to which the fluid may rise in. thethird receptacle is limited.

The invention will be more fully exferred embodiment of the invention, parts being shown in elevation and other parts in section; and Fig. 2 is a sectional view taken generally on line 22 of Fig. 1, and under the assumption that the receptacle elements appearing on this line 22 are side by side in one unitary structure, as they are in practice.

The invention is described herein as being used for water softening, though it is not to be thus limited.

The treatment or settling tank 1 receives the water or other liquid that is to be treated through the incoming pipe 2, containing a shut off altitude valve 3. An altitude valve serves the purpose of a float valve but is operated by the head of water in the tank instead of by a float. As the head increases the pressure shuts. the valve and as the head lowers the pressure decreases and the valve opens. The liquid is discharged into the tank below a limiting level through an orifice t smaller than the cross sectional area of the piping 2, the liquid being initially admitted to the tank 1 within the tank 1 and near the top of tank 1. Tank 1' is closed at the top and discharges, at its bottom, into tank 1. A source of chemical isillustrated in the form of a chemical tank 5, which holds the chemical 6 such as calcium hydrate and sodium carbonate where water is being softened. Chemical, from the source of the chemical, is. supplied into the tank 1 through the piping 7 whose discharge end is located near thedischarge end of piping 2. The chemical is forced through pipe 7 by means of a pump 8 through which the chemical flows from the swinging pipe 9 mounted in the chemical tank 5, and the continuation 9 of this pipe. The position of this swinging pipe is governed by a float 10 that is connected witlrtlie pipe 9 by means of a cable 11 passing over sheave 12. The float tank 13, which contains the float 10, receives a fractional portion of the treat ed liquid, which is employed to govern the flow of chemical into the treatment tank, through the fixed piping 14, which is flexibly connected with a swinging pipe 15 located in an open receptacle 16. A. float 17 is located a receptacle 18, that is .descend by its own weight. 20 I against the admission of air above the liquid therein. The two receptacles 16, 18 are side by side and have a common wall 18 separating them. A. shaft 17 is mounted to turn in a bearing 17 which passes through and is carried by the wall 18. A bent lever 15 is carried by one end or this shaft and extends beneath the pipe 15 to be in lifting relation thereto. The stem 17 of float 17 is lined upon the other end of the shaft. The float 17, in rising upon elevation of the liquid level in receptacle 18 causes the shaft to turn in a direction to swing lever 15 and, consequently, pipe 15 upwardly. lVhen said float descends upon lowering of the liquid level in receptacle 18 the lever 15 is lowered by its own weight and that of the float to permit pipe 1o to Receptacle 18 has communication through pipe 19 with pipe 2 on the diseh arge or low pressure side of the orifice 1-. Receptacle 18 is connected by the upper air passage 20 with a receptacle 21 that is also closed against the admission of external air above the liquid therein. Receptacle 21 is separated from receptacle 16 bya continuation of wall 18 .and in turn is connected by pipe 22 with the inlet pipe 2 on the inlet or high pres sure side of orifice 4. A float 23 in receptacle 21 has control of the swinging pipe 24E, which is also located in receptacle 16,

through mechanism similar to that by which float 1'7 .controls pipe 15. Pipe 2t is flexiblyconneeted through an outer wall of this receptacle with pipe 25, which empties into receptacle 26. Sottened water is withdrawn for its intended use through pipe 27 from the upperend of the settling tank 1, a portion flowing from this pipe through piping 28 and to thesoft water receptacle 26. The T 9 connects pipe 9 with receptacle 26. Pipe lid-is connected to pipe 29 and supplies soft water to receptacle 16. A. float valve 32 is placed in the piping 29, this valve being controlled by the float 32 in turn governed by the level of liquid in receptacle 26.

hen the apparatus is in operation, avater is flowing to the receptacle 26 through piping 29, which also keeps receptacle 16 supplied with softened water.

hen no water is flowing through pipe 2,

the pressure on both sides oi the orilice 4 is thesame. Necessarily the pressiuie.inreceptacles 18 and 21 is the same'so that the water ment tank, the pressure of the incoming water before it reaches orihce at is greater than von the discharge side of this orifice.

This pressure is transmitted to receptacle 21 through pipe 22, and causes the level of the liquid to rise inthis receptacle. This increase in water pressure is conveye'd"through the air in the closed receptacles 18 and 21 by way of the air passage 20, so as to depress the level of liquid in chamber 18. The dititerence in'thc level-of the two liquids in chambers 18 and 21 respectively is proportional to the dilterence in hydrostatic pressures on the two sides of the orifice 4-. Float 17 in chamber 18 lowers whereas float 23 in chamber 21 rises. Pipe 24 is used as a means for controlling the level of softened water in the receptacle 16. Valve 33 in pipe 30 is so set as to allow a fixed amount oi softened water to enter'receptacle 16. This water flows from receptacle 16 through pipes 24 and 25 to receptacle 26 where it mixes with the chemical and water and is pumped back into the treatment tank'through pump 8 and pipe 7. The level of liquid in receptacle 16 depends upon the position of pipe 2 1-. Pipes 151and 2 1 are always in a relative postion to floats 17 and 23, which in turn are governed by the water pressures at the orifice 1. This allows softened water to flow through the orifice inpipe 15 in direct proportion to the amount of water passing the orifice 4- .1 01 treatment. .Vhen water is not running .to the treatment'tank, the level of the two liquids in chambers 18 and 21 be come the same which raises'the intake end 01 pipe 15 just above theliquid level in receptacle '16 so as to-entirely stop any flow to tank 13. hen the apparatus is shut down, pump 8 is not operated, all soft waterbeing shut off from receptacle 26 and in-turn from receptacle 16.

In the event of excessive flow of chemical diluting water into the tank 26 the float 32 will rise to close the valve 32 to shut oil the flow of water throughthe pipe 29, to pretothe tank 16 rcceiv-esits supply from the pipe 29.

Changes may bemade without departing :l'rom the invention.

Having thus described my invention, 1 claim 1. In a liquid treating apparatus, the combination with atrcatment tank rewiring liquid to be treated; of a pipe disch p" into said tank and l'iaving an orifice therein tl'irough which-the liquid passes and in cross sectional area'than the bore oi pipe; two receptacles respectively supplied with liquid from oppositesides of said orilice, said receptaclesbeing closed against the admission of external air and being con nected by an air passage; a source of chemical; and mechanism governing the flow of chemical from the chemical source and inclusive of elements governed by the liquid in said receptacles.

2. In a liquid treating apparatus, the

1 lil ll l combination with a treatment tank receiving liquid to be treated; of a pipe discharging into said tank and having an orifice therein through which the liquid passes and smaller in cross sectional area than the bore of said pipe; two receptacles respectively supplied with liquid from opposite sides of said orifice, said receptacles being closed against the admission of external air and being connected by an air passage; a source of chemi cal; and mechanism governing the flow of chemical from the chemical source and inclusive oi floats governed by the liquid in said receptacles.

3. In a liquid treating apparatus, the combination with a treatment tank receiving liquid to be treated; of a pipe discharging into said tank and having'z-in oriiice therein through which the liquid passes and smaller in cross sectional area than the bore of said pipe; two receptacles respectively supplied with liquid from opposite sides of said orifice, said receptacles being closed against the admission of external air and being connected by an air passage; a third receptacle; a fourth receptacle, the third and fourth receptacles havingconnections to supply them with controlling liquid; a valve controlling the supply of liquid to the third receptacle; mechanism governed by the liquid in the fourth receptacle and operating upon said valve in a closing direction uponincrease in the level of this liquid beyond a predetermined point; a source of chemical in eommunication with the treatment tank to supply chemical thereto; means i or regulating the supply of chemical from the chemical source to the treatment tank; mechanism controlling said means, the third receptacle supplying liquid to said mechanism which is operable by this liquid; and two mechanisms respectively operated by the liquid bodies in the receptacles that are respectively supplied from the low and high pressure sides of said orifice and respectively governing discharge of liquid from the third receptacle and the admission of liquid to the fourth receptacle.

4. In a liquid treating apparatus, the combination with a treatment tank receiving liquid to'be treated; of a pipe discharging into said tank and having an orilice therein through which the liquid passes and, smaller in cross sectional area than the bore of said pipe; two receptacles respectively supplied with liquid from opposite sides of said orifice, said receptacles being closed against the ad mission 01", QXtGlIlil-l air and being connected fourth receptacle, the third and fourth rece )tacles having connections to supply them with controlling liquid; a valve controlling the supply oi liquid to the third. receptacle; mechanism governed by the liquid in the fourth rece )tacle and o era-tin use-n t3 valve in a closing direction upon increase in the level of this liquid beyond predetermined point; a source of chemical in communication with the treatment tank to supply clien'iical thereto; means for regulating the supply of chemical from the chemical source to the treatment tank; a tank supplied with liquid from the third receptacle; mechanism governed by the liquid in the latter tank and governing said regulating means; and two mechanisms respectively operated by the liquid bodies in the receptacles that are respectively supplied f1 om the low and high pressure sides oi said orifice and respectively governing discharge of liquid from the third receptacle and the admission of liquid to the fourth receptacle.

5. In a liquid treating apparatus the com bination with. tr atment tank receiving liquid to be treated; ot-a pine discharging into said tank and having an orifice therein through which the liquid passes and smaller in cross sectional area than the bore of said pipe; two receptacles respectively supplied with liquid from opposite sides of said orilice said receptacles being closed against the admission of external air and being connected by an air passage; a third receptacle; a fourth receptacle, the third and fourth re ceptacles having connections to supply them with controlling liquid; a valve controlling the supply of liquid to the bird receptacle; mechanism governed by the liquid in the fourth receptacle and operating upon said valve in a closing direction upon increase in the level of this liquid beyond a predetermined point; a source of chemical in communication with the treatment tank to supply chemical thereto; means for regulating the supply of chemical from the chemical source to the treatment tank; a tank supplied with liquid irom the third receptacle; mechanism governing said regulating means and inclusive of a iioat for operating it and which float is actuated by the liquid in the.

latter tank; and two mechanisms respectively operated by the liquid bodi s in the receptacles that are respectively supplied from the low and high pressure sides oi said orilice and respectively governing discharge o1 liquid from the third receptacle and the admission of liquid to the fourth receptacle.

6. In a liquid treating apparatus, the colubimition with a treatment tank receiv ing liquid to be treated; of a pi pc discharging into said tank and having an orilice therein through which the liquid passes and.

sn'ialler in cross sectional area than the bore by an air passage; a third receptacle; a'

of said pipe; two receptacles respectively supplied with liquid from opposite sides of said orifice and being connected to have the liquid levels therein 2 latively vary in pro portion to the preset es of the liquid on op posits sides of said critics; as source cf chem icai; and. mechanism governing the dew chemical from the chemical source and inclusive of elements governed by the liquid in said receptacles.

7.111 a liquid treating apparatus, the combination with a treatment tank receiving liquid to be treated; of a pipe discharging into said tank and having an orifice therein through which the liquidpasses and smaller in cross sectional area than the bore of said pipe; two receptacles respectively supplied with liquid from opposite sides of said orifice and beingconnectcd to have the liquid levels therein relatively vary in proportion to the pressures of the liquid on opposite sides of said orifice; source of chemical; and mechanism governing the liow of chemicalfrom the chemical source and inclusive of floats governed by the liquid in said receptacles.

8.111 a liquid treating apparatus, the cimhination with a treatment tank receiving liquid to he treated; of a pipe discharging into said tank and having an orifice therein through which the liquid passes and smaller in cross sectional area than the bore of said pipe; two receptacles respectively supplied with liquid from opposite sides of said orifice, said receptacles being connected to have the liquid levels therein relatively vary in proportion to the pressure of the liquid on opposite sides of said orilice; a third receptacle; a fourth receptacle, the third and fourth receptacles having connections to supply them with controlling liquid; a valve controlling the supply of liquid to the third receptacle; mechanism governed by the liquid in the fourth receptacle and operating upon said valve in a closing direction upon increase in the level ofthis liquid beyond a predetermined point; a source of chemical in communication with the treatment tank to supply chemical thereto; means for regulating the supply of chemical from the chemical source to the treatment tank; mechanism controlling said means the third receptacle supplying liquid to said mechanism which is operable by this liquid; and two mechanisms respectively operated by the liquid bodies in the receptacles that are respectively supplied from the low and high pressure sides of said orifice and respectively governing discharge of liquid from the third recep 'taclc and the admission of liquid to the fourth receptacle.

9. In a liquid treating apparatus the com ination with a treatment tank receiving liquid to be treated: of a pipe discharging into said tank and having an orifice therein through which the liquid passes and smaller in cross sectional area than the bore of said pipe; two receptacles respectively supplied with liquid from opposite sides of said orifice, said receptacles connected to have the liquid levels their-in relatively vary in proportion to the iressure of the liquid on opposite sides of said orifice; a third receptacle;-a fourth receptacle, the third and fourth receptacles having connections to supply them with controlling liquid; a valvecontrolling the supply o'fliquid to the third receptacle; mechanism governed by the liquid in the fourth receptacle and operating upon'said valve in a closing direction upon increase in the level of this liquid beyond a predetermined point; a source of chemical in communication with the treatment tank to supply chemical thereto; means for regulating the supply of chemical from the chemical source to the'treatmcnt tank; a tank supplied with'liquid from the third receptacle; mechanism governed by the liquid in the latter tank and governing said regulating means; and two mechanisms respectivel operated by the liquid bodies in the receptacles that arerespectively supplied from the .low and highpressure sides of said orifice and respectively governing discharge of liquid from the third receptacle and thendmission of liquid to the fourth receptacle.

10. In a liquid treating apparatus, the combination with a treatment tank receiving liquid to be treated; of a pipe discharging into said tank and having an orifice therein through which the liquid passes and smaller in cross sectional area than the bore of said pipe; two receptacles respectively supplied with liquid fromopposite sides of said orifice, said receptacles'being connected to have the liquid levels therein relatively vvarv in proportion to the pressures of the liquid on opposite sides of said orifice; a third receptacle; a fourth rcceptacle, the third and fourth receptacles having connectionsto supply them with controllingliquid; a .valve controlling the supply of liquid to the third receptacle; mechanism governed by the liquid in the fourth receptacle and operating upon said valve in a closing direction upon increase in the thelevel of this liquid beyond a prcdetcrmined point; a source of chemical in communication with the treatment tank to sup ply chemical .thercto; means for regulating the supply of chemical from the chemical source to the treatment tank; a tank supplied with liquid frointhe third receptacle;

mechanism governing said regulating means and inclusive of a heat for operating it and which float is actuated by the liquid in the laller tank: and two mechanisms respectively operated by the liquid'hodies in the receptacles that are respectively supplied from the low and high pressure sides of said orifice and respectively governing discharge of liquid from the third receptacle and the admission of liquid to the fourth. receptacle.

11.; In a liquid treating apparatus the combination with a treatment tank receiving liq uic to be treated; of a pipe discharging into said tank and having an orifice therein through which the liquid passes and smaller in cross sectional area than the bore of said type; two receptacles respectively supplied with liquid from opposite sides of said orifice, said receptacles being closed against the admission of external air and being connected by an air passage; a third receptacle; a fourth receptacle, the third and fourth receptacles having connections to supply them with controlling liquid; a valve controlling the supply of liquid to the third receptacle; mechanism governed by the liquid in the fourth receptacle and operating upon said valve in a closing direction upon increase in the level of this liquid beyond a predetermined point; a source of chemical in communication with the treatment tank to supply chemical thereto; means for regulating the supply of chemical from the chemical source to the treatment tank; mechanism controlling said means, the third receptacle supplying liquid to said mechanism which is operable by this liquid; and two mechanisms respectively operated by the liquid bodies in the receptacles that are respectively supplied from the low and high pressure sides of said orifice and respectively governing discharge of liquid from the third receptacle and the admission of liquid to the fourth receptacle, each of these two mechanisms being inclusive of a float riding upon said liquid bodies and swinging discharge pipes in the third receptacle with which said floats are in lifting relation.

12. In a liquid treating apparatus, the combination with a treatment tank receiving liquid to be treated; of a pipe discharging into said tank and having an orifice therein through which the liquid passes and smaller in cross sectional area than the bore of said pipe; two receptacles respectively supplied with liquid from opposite sides of said orifice, said receptacles being closed against the admission of external air and being connected by an air passage; a third receptacle; a fourth receptacle, the third and fourth receptacles having connections to supply them with controlling liquid; a valve con trolling the supply of liquid to the third receptacle; mechanism governed by the liquid in the fourth receptacle and operating upon said valve in a closing direction upon increase in the level of this liquid beyond a predetermined point; a source of chemical in communication with the treatment tank to supply chemical thereto; means for regulating the supply of chemical from the chemical source to the treatment tank; a tank supplied with liquid from the third receptacle; mechanism governed by the liquid in the latter tank and governing said regulating means; and two mechanisms respectively operated by the liquid bodies in the receptacles that are respectiveiy supplied from the low and high pressure sides of said orifice and respectively governing discharge of liquid from the third receotacie and the admission of liquid to the fourth receptacle, each of these two mechanisms being inclusive of a float riding upon said liquid bodies and swinging discharge pipes in the third receptacle with which said floats are in lifting relation.

13. In a liquid treat-ing apparatus, the combination with a treatment tank receiving liquid to be treated; of a pipe discharging into said tank and having an orifice therein through which the liquid passes and smaller in cross sectional area than the bore of said pipe; two receptacles respectively supplied with liquid from opposite sides of said orifice, said receptacles being closed against the admission of external air and being con nected by an air passage; a third receptacle; a fourth receptacle, the third and fourth receptacles having connections to supply them with controlling liquid; a valve controlling the supply of liquid to the third receptacle; mechanism governed by the liq-- uid in the fourth receptacle and operating upon said valve in a closing direction upon increase in the level of this liquid beyond a predetermined point; a source of chemical in communication with the treatment tank to supply chemical thereto; means for regulating the supply of chemical from the chemical source to the treatment tank; a tank supplied with liquid from the third receptacle; mechanism governing said regulating means and inclusive of a float for operating it and which float is actuated by the liquid in the latter tank; and two mechanisms respectively operated by the liquid bodies in the receptacles that are respectively supplied from the low and high pressure sides of said orifice and respectively governing discharge of liquid from the third receptacle and the admission of liquid to the fourth receptacle each of these two n'iechanisms being inclusive of a float riding 7 upon said liquid bodies and swinging discharge pipes in the third receptacle with which said floats are in lifting relation.

14. In a liquid treating apparatus, the combination with a treatment tank receiving liquid to be treated; of a pipe discharging into said tank and having an orifice therein through which the liquid passes and smaller in cross sectional area than the bore of said pipe; two receptacles respectively supplied with liquid from opposite sides of said orifice, said receptacles being connected to have the liquid levels therein relatively vary in proportion to the pressure of the liquid on opposite sides of said orifice; a third receptacle; a fourth receptacle, a third and fourth receptacles having connections to supply them with controlling liquid; a valve controlling the sup ply of liquid to the third receptacle; mechanism governed by the liquid in the fourth receptacle and operating upon said valve in a closing direction upon increase in the level of this liquid beyond a predetermined point; a source of chemical in communication with the treatment tank to supply chemical thereto; means for regulating the supply of chemical from the chemical source to the treatment tank; mechanism controlling said means, the third receptacle supplying liquid to said mechanism which is operable by this liquid; and two mechanisms respectively operated by the liquid bodies in the receptacles that are respectively supplied from the low and high pressure sides of said orifice and respectively governing discharge of liquid from the third recpectacle and the admission of liquid to the fourth receptacle, each of these two mechanisms being inclusive of a float riding upon said liquid bodies and swing ing discharge pipes in the third receptacle with which said floats are in lifting relation.

15. In a liquid treating apparatus, the combination with a treatment tank receiving liquid to be treated; .of a pipe discharg' ing into said tank and having an orifice therein through which the liquid passes and smaller in cross sectional" area than the bore of said pipe; two receptacles respectively supplied with liquid from opposite sides of said orifice, said receptacles being connected to have the liquid levels therein relatively vary in proportion to the pressure of the liquid on opposite sides of said orifices; a third receptacle; a fourth receptacle, the third and fourth receptacles having connections to supply them with controlling liquid; a valve controlling the supply of liquid to the third receptacle; mechanism governed by the liquid in the fourth receptacle and operating upon said valve in a closing direction upon increase in the level of this liquid beyond a predetermined point; a source of chemical in communication with the treatment tank to supply chemical thereto; means for regulating the supply of chemical from the chemical source to the treatment tank; a tank supplied with liquid from the third receptacle; mechanism gov erned by the liquid in the latter tank and governing said regulating means; and two mechanisms respectively operated by the liquid bodies in the'recepta'cles that are respectively supplied from the low and high pressure sides of said orifices and respec tively governing discharge of liquid from the third receptacle and the admission of liquid to the fourth receptacle, each of these two mechanisms being inclusive of a float riding upon said liquid bodies and swinging discharge pipes in the third receptacle with which said floats'are' in lifting relation.

16; In a liquid treating apparatus; the combination with" a treatment tank receiving liquid to be treated; of a pipe discharging into said'tank and having an orifice therein through which the liquid passes and smaller in cross sectional area than the bore of said pipe; two receptacles respectively supplied with liquid from opposite sides of said'orifice', said receptacles being connected to have the liquid levels therein relatively vary in proportion to the pressures of the liquid on opposite sides of said orifice; a third receptacle; a fourth receptacle, the third and fourth receptacles having con nections to supply themx with controlling liquid; a valve controlling the supply of liquid to the thirdv receptacle; mechanism governed by the liquid in the fourth receptacle and operating upon said valve in a closing direction upon increase in the level of this liquid beyond a predetermined point; a source of chemical in communication with the treatment tank to supply chemical thereto; means for regulating the supply of chemical from the chemical source to the treatment tank; a tank supplied with liquid from the third receptacle; mechanism governing said regulating means and inclusive of a float for operating it and'which float is actuated by the liquid in the latter tank; and two mechanisms respectively operated by the liquid bodies in the receptacles that are respectively supplied 'from'the low and high pressure sides of said orifice and re spectively governing discharge of liquid from the third receptacle and the admission of liquid to the fourth receptacle, each of these two mechanisms being. inclusive of a float riding upon said liquid bodies and swinging discharge pipes in the third receptacle with which said floats are in lifting relation.

In witness whereof, I hereunto subscribe my name.

KENT IV. BARTLETT. 

